pointfree.io
ramda
pointfree.io | ramda | |
---|---|---|
7 | 80 | |
160 | 23,592 | |
- | 0.3% | |
10.0 | 6.8 | |
over 1 year ago | 7 days ago | |
HTML | JavaScript | |
MIT License | MIT License |
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pointfree.io
- Tacit Programming
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Custom set implementation
You can test out things like that at https://pointfree.io. It takes a lambda with all the arguments present, like \ a b c -> f (g a b c), and it produces ((f .) .) . g.
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Inner (dot) product in tacit point-free form
I'm learning Haskell, coming from the APL family. I'm familiar with point-free style and function composition and wanted to learn Haskell for a more pure functional experience. To get some practice i figured I'd write up the dot product and vector product functions. I haven't begun looking at the vector product, but for dot product I quickly came to `dot a b = sum $ zipWith (*) a b`. After toying around with composition (the B-combinator .), I couldn't get it to work. I looked up the tacit solution in pointfree.io, and it gave me the short and sweet `dot = (sum .) . zipWith (*)`. Now here's my question: how is (sum .) supposed to work? I don't get where the arguments implicitly go or how this makes syntactically sense. What is the order of operations?
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Is there functional programming simplifier or sanitizer that uses the no side effect phenomenon?
Pointfree sort of does that https://pointfree.io/
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Try the wasm port of pointfree
This is great! And timely too, since http://pointfree.io seems to be down at the moment. It’s also nice to see that the WASM backend is already usable.
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Monthly Hask Anything (December 2022)
The source code seems to be here: https://github.com/keathley/pointfree.io
ramda
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Tacit Programming
JavaScript is great for point-free programming! Make sure you check out Ramda.js https://ramdajs.com/
It’s fun in the sense that solving a puzzle is fun, but I avoid it for anything I need to maintain long-term.
But it’s good practice for understanding combinators which is useful for some kinds of problems.
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Pipeline-Oriented Programming [video]
This is very cool. I remember I got sucked into things like Ramda going down this functional programming rabbit hole :-)
https://ramdajs.com/
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Level up your Typescript game, functionally - Part 2
To create our pipeline, I'm going to use the pipe function from the NodeJS ramda library instead of building my own.
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Level up your Typescript game, functionally - Part 3
Other libraries to check out are pratica and ramda
- Ramda: A practical functional library for JavaScript programmers
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FP and JavaScript/TypeScript
I recently took ownership of the new types/ramda repo. This repo is re-exported by @types/ramda and is the first step to bringing type definitions for ramda in-house. We're already hard at work correcting major issues, adding full currying support, and general bug fixes
- [AskJS] Auto-Generated Documentation from JSDoc comments, nice modern themes?
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When to use currying in JavaScript
I'm going to be honest. You probably don't need to use currying in JavaScript. In fact, trying to fit it in your code is going to do more harm than good, unless it's just for fun. Currying only becomes useful when you fully embrace functional programming, which, in JavaScript, means using a library like Ramda instead of the standard built-in functions.
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No Lodash
Lodash gets so many things wrong I’d rather not see it in most projects. I appreciate a good utility library for JS projects but my go-to choice has to be Ramda[1]. Every function it exports is curried and works great with pipe which enables me to write highly reusable and composable functions in pointfree notation. I have never been as productive with lodash, and I find the functional style easier to read
[1] https://ramdajs.com/
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Snap.js - A competitor to Lodash
Do note though that ramda is different from rambda. 👍 (Granted they are very similar!)
What are some alternatives?
haskell - Exercism exercises in Haskell.
lodash - A modern JavaScript utility library delivering modularity, performance, & extras.
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
Rambda - Faster and smaller alternative to Ramda
WASI - WebAssembly System Interface
RxJS
flyctl - Command line tools for fly.io services
immutable-js - Immutable persistent data collections for Javascript which increase efficiency and simplicity.
wasmer-js - Monorepo for Javascript WebAssembly packages by Wasmer
fp-ts - Functional programming in TypeScript
lazy.js - Like Underscore, but lazier
Sanctuary - :see_no_evil: Refuge from unsafe JavaScript